This is the original footage used by Neil Cicierega to create his mashup track "300MB" which was on youtube until this year.
Needless to say, the presentation is absurd and factually dubious. As a personal footnote, the most well known quote - "three HUNDRED megabytes of storage capacity" - is ironically a falsehood. The hard drive was actually 170MB and the promised 300MB would have been achieved through a disk compression application, which would have given varied capacity based on what you were storing.
Original Youtube caption:
msr $ 3999.00 486SX 25 computer in 1992
Windows 3.1, DOS 6.0, 170mb HD, 4 megs ram, CD ROM, Sound Blaster, New 14" colour monitor